Engine Tach (Rotation Speed) Testing "Rpmx10; Operation Of Hold Mode - EGAmaster EGAtronik 51259 Manual De Instrucciones

L. ENGINE TACH (ROTATION SPEED) TESTING "RPMX10" (SEE FIGURE 13)
The RPM means the rotating frequency of the main shaft of the engine per minute.
1. Set the rotary switch to RPMx10.
2. As prompted at the LCD connect terminal, insert the red test lead into the
the black one into the COM terminal. Select an appropriate number of cylinders. Connect the ends
to be tested as illustrated.
- If a DIS ignition system without any distributor board is used in the automobile, connect the
red test lead probe to the TACH (tachometer) signal line (which is connected to the computer
DIS module of the automotive engine). Refer to the automotive servicing manual for the specific
position.
- If an ignition system with a distributor board is used in the automobile, connect the red test
lead probe to the primary negative end of the ignition coil. (Refer to the automotive servicing
manual for the specific position.)
3. Connect the black test lead probe to the good ground terminal of the automobile.
4. Upon the start of the engine or during its operation, test the rotation speed of the engine and
read the displayed value from the display. The actual rotation speed of the automobile to be tested
should be equal to the displayed value multiplied by 10. For example, the actual rotation speed of
the engine of the automobile should be 2000 RPM (200 x 10) if the displayed value is 200 and the
meter is set at the 6CYL (6 cylinders) notch.
The Hold mode is applicable to all measurement functions:
- Press HOLD to enter Hold mode.
- Press HOLD again to exit Hold mode.
- In Hold mode,
M. OPERATION OF HOLD MODE
is displayed.
(figure 13)
terminal and
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